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US 12,191,447 B2Granted
Gel electrolyte composition for a battery and a method of implementation
AssigneeAnthro Energy, Inc.
InventorsDavid George Mackanic, Joseph K. Papp
Life of this patent
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Abstract
A method can include: receiving a gel electrolyte precursor solution comprising a polymeric precursor (such as monomers or oligomers), an initiator, and a plasticizer; adding the gel electrolyte precursor solution to a battery stack; wetting the battery stack with the gel electrolyte precursor solution; and curing the gel electrolyte precursor to form a covalently bonded gel electrolyte network interspersed throughout the battery stack.
Claims28
A method for forming a gel electrolyte battery comprising:
- receiving a first gel precursor solution comprising a plasticizer and a polymer precursor;
- receiving a second gel precursor solution comprising a solvent and a polymerization initiator;
- mixing the first gel precursor solution and the second gel precursor solution to form a gel electrolyte precursor with a viscosity between 10 and 50 centipoise;
- immediately after mixing, adding the gel electrolyte precursor to a battery;
- wetting a cathode, an anode, and a separator of the battery with the electrolyte precursor via pulsed vacuum wetting, wherein a vacuum pressure during each vacuum pulse is at most 0.95 Bar;
- at least 6 hours after wetting the cathode, the anode, and the separator of the battery;
- curing the gel electrolyte precursor by:
- fixing the battery with a force between 5-1000 psi;
- and
- heating the gel electrolyte precursor to a temperature between 60-80° C. for between 30 minutes and 24 hours;
- wherein after curing the gel electrolyte precursor forms a gel electrolyte throughout the cathode, the anode, and the separator.
8 more elements
A method comprising:
- receiving a gel electrolyte precursor solution comprising:
- an acrylate oligomer or a methacrylate oligomer comprising a toughening region;
- an initiator;
- and
- a plasticizer;
- adding the gel electrolyte precursor solution to a battery stack comprising a cathode, an anode, and a separator;
- wetting the battery stack with the gel electrolyte precursor solution;
- prior to or during wetting the battery stack, tap charging the battery stack to a voltage between 1.5 and 2.2 V;
- and
- curing the gel electrolyte precursor solution to form a covalently bonded gel electrolyte network interspersed throughout the cathode, the anode, and the separator.
7 more elements
A method comprising:
- receiving a gel electrolyte precursor solution comprising:
- an acrylate oligomer or a methacrylate oligomer comprising a toughening region;
- an initiator;
- and
- a plasticizer;
- adding the gel electrolyte precursor solution to a battery stack comprising a cathode, an anode, and a separator;
- wetting the battery stack with the gel electrolyte precursor solution;
- and
- thermally curing the gel electrolyte precursor solution to form a covalently bonded gel electrolyte network interspersed throughout the cathode, the anode, and the separator by maintaining a temperature of the gel electrolyte precursor and the battery stack between 6° and 80° C. for between 0.5 and 24 hours and mechanically fixing the gel electrolyte precursor and the battery stack with a pressure between 5 psi and 1000 psi.
6 more elements
Dependencies are inferred from the claim text.